S10/T10 P/U 4WD V6-4.3L VIN X (1996)
Evaporative Emissions Air Separator: Description and Operation
Evaporative Canister Vent Valve
DESCRIPTION
The Evaporative Canister Vent Valve replaces the fresh air vent used on the past EVAP canisters. The vent valve now not only allows the fresh outside
air to the EVAP canister during the purge modes, but also allows the diagnostic to pull a vacuum on the fuel tank by closing the vent valve. This valve is
normally open.
